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The project will utilize a 4.5 million acre study area on the Montana Glaciated Plains. The objectives are to (1) identify environmental conditions and management practices that will maintain habitat for grassland birds but not impact ranching sustainability, and (2) identify areas on the landscape that have the greatest conservation potential for grassland birds. This spatial analysis will provide the framework for a rigorous assessment of management actions on the Montana Glaciated Plains.
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Rapid expansion of cropland threatens grassland ecosystems across western North America and broad-scaleplanning can be a catalyst motivating individuals and agencies to accelerate conservation. Sprague’s Pipit(Anthus spragueii) is an imperiled grassland songbird whose population has been declining rapidly in recent decades.Here, we present a strategic framework for conservation of pipits and their habitat in the northern GreatPlains.We modeled pipit distribution across its million-km2 breeding range in Canada and the U.S.We describefactors shaping distribution, delineate population cores and assess vulnerability to future grassland losses. Pipitsselected landscapes with a high proportion of continuous grassland...
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The Matador Ranch Grassbank is the most successful grassbank in the country, annually incentivizing conservation actions on over 200,000 acres of participating ranches. Incentives for management actions are in the form of discounts, which reduce the cost of leased grazing at the Matador Ranch. One of the required discounts for participating in the grassbank is a ranch management plan that guides grazing and benefits natural communities and the wildlife dependent upon them. This report details the results of our work to assess resource conditions and craft management plans with eight ranches on over 113,000 acres. Our analysis found that overall ranches implemented grazing management practices that maintained ecological...
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Temperate grasslands are among earth’s most imperiled ecosystems. In North America,steep declines of endemic songbird populations indicate that grassland loss and degradation may be approaching critical levels. Grasslands are agricultural landscapes largely (~85%) under private ownership with little formal protection status. Remaining bird populations depend on grazing lands that have not been converted to cropland. We combine regional data from a hotspot for grassland bird diversity (northeast Montana,USA; 26,500-km2) with continental data spanning the northern Great Plains (1,000,000- km2) to evaluate how land use and management influence bird distribution and abundance. Regionally, habitat used by seven grassland...
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Climate change has been implicated in the range shifts and population declines of many species, but the confounding of climate change with other variables, particularly landscape change, hampers inference about causation. Climate envelope models have been used to predict population trends and future distributions, but the reliability of such predictions remains relatively unknown; without tests of model accuracy, policy development will be based on highly uncertain ground. Our team assembled recent developments in change detection mapping and species modeling. Specifically, our objectives were to: (1) use 32-year data on bird distributions to test the reliability of climate envelope models, (2) test whether changes...
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Temperate grassland ecosystems are imperiled globally, and habitat loss in North America has resulted in steepdeclines of endemic songbirds. Commercial livestock grazing is the primary land use in rangelands that supportremaining bird populations. Some conservationists suggest using livestock as “ecosystem engineers” to increasehabitat heterogeneity in rangelands because birds require a spectrum of sparse to dense vegetation cover.However, grazing effects remain poorly understood because local studies have not incorporated broad-scaleenvironmental constraints on herbaceous growth. We surveyed grassland birds across a region spanning26 500 km2 in northeast Montana, United States to assess how distribution and abundance...
    map background search result map search result map Disentangling the Effects of Climate and Landscape Change on Bird Population Trends in the Western U.S. and Canada Grassland Bird Conservation on Working Landscapes: Spatial analysis linking populations to habitat Report: Assessing and Implementing Ranch Management Planning at Scale through the Matador Ranch Grassbank Cows and Plows: Science-based Conservation for Grassland Songbirds in Agricultural Landscapes Precipitation and Soil Productivity Explain Effects of Grazing on Grassland Songbirds One step ahead of the plow: Using cropland conversion risk to guide Sprague's Pipit conservation in the northern Great Plains Grassland Bird Conservation on Working Landscapes: Spatial analysis linking populations to habitat Report: Assessing and Implementing Ranch Management Planning at Scale through the Matador Ranch Grassbank Cows and Plows: Science-based Conservation for Grassland Songbirds in Agricultural Landscapes Precipitation and Soil Productivity Explain Effects of Grazing on Grassland Songbirds One step ahead of the plow: Using cropland conversion risk to guide Sprague's Pipit conservation in the northern Great Plains Disentangling the Effects of Climate and Landscape Change on Bird Population Trends in the Western U.S. and Canada